Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Scan Tool Data Definitions

8 Digit GM Part Number: The scan tool displays an eight digit number. This is the plant build part number for the installed remote keyless entry system.

# of Fobs Programmed: The scan tool displays 1-4 Fobs.

Calibration ID: The scan tool displays a 4-digit number. It is the calibration or program revision level used in the PROM.

Invalid Transmitter: The scan tool displays more or less than 10. This is to show how many invalid transmissions were received by the RFA.

Key Pressed On Fob: The scan tools displays Dr. Door Unlock, Door Lock, All door Unlock, Trunk and Fuel Door/Alarm. This displays the function of the last key fob button received by the RFA module.

Last Fob Used: The scan tool displays the Fob #. It displays the number of the last fob received by the RFA. There may be up to four fobs programmed for the RFA.

PROM: The scan tool displays a tour digit number. It is the number of the PROM incorporated into the RFA module.